FISCHER FISCHERSCOPE X-RAY 4000 Series, Operator'S Manual

Page: 120 / 170

120 FISCHERSCOPE
®
X-RAY
Calibration
14. Position the standard, close the measuring chamber, adjust the focus and click Start .
The instrument will perform the measurement.
After the measurement, you will be prompted either to measure a new standard or to
measure the same standard one more time. If you measure the same standard again,
move it slightly to measure it at a different location.
After the last measure-
ment, the window
Input of
the calibration standard
set
will appear.
NOTE: After the last
measurement the soft-
ware performs compre-
hensive calculations. For
this reason it can take up
to two minutes until the
window appears.
15. Ensure that the following conditions are met:

The values in columns (3) Corr. (corrected values) are consistent with the values
in columns (1) Set (nominal values).

The values in columns (2) Theor. (standard-free values) deviate from the values in
columns (1) Set (nominal values) by no more than 20 %.

The values in columns (2) Theor. (standard-free values) should fit logically, i.e., a
higher value in column (2) Theor. (standard-free values) belongs to a higher value
in column (1) Set (nominal value).
16. if the conditions are not met, check your settings and repeat the calibration beginning
with step 13.
17. When the conditions are met, click OK.
The calibration for this measuring application will be activated.
18. To verify the calibration, select Product > Measure Cal. Standards .
The name of the calibra-
tion standard set will
appear in the field
Product name with a red
background.
19. Measure the calibration standards as prompted. Measure each standard several times.
20. Verify that the nominal value of the standard is within the range x (mean value) ±2 s
(standard deviation of the re-measurement).
The following table shows some examples:
1 2 3 1 2 3